Ductless Mini-Split Systems

Ductless Mini-Split Heating & Cooling

Ductless mini-split systems provide an energy efficient, flexible way to heat and cool individual rooms or your entire home without relying on ductwork. At Althoff Home Services, we install, repair, and maintain ductless systems for homeowners in Crystal Lake, Hillside, and the surrounding Chicago suburbs, delivering personalized comfort right where you need it.

We provide quotes before
performing service

Family owned since
1961

Proudly serving the Crystal
Lake area for over 60 years!

100% satisfaction
guarantee

Flexible Ductless Solutions

Whether you are replacing inefficient window units, finishing a basement, or supplementing comfort in a new room addition, ductless systems offer an adaptable heating and cooling solution. Our team takes the time to understand your home’s layout, providing thoughtful recommendations, clear communication, and expert installation.

Multi-Zone Installation

Connect multiple sleek indoor air handlers to a single outdoor unit, allowing independent temperature control in different areas of your home.

Single-Room Solutions

Ideal for sunrooms, home additions, finished basements, or older homes where installing traditional ductwork is impractical or impossible.

Repair & System Maintenance

Precision troubleshooting, filter cleaning, and coil maintenance to keep your mini-split running quietly and efficiently year after year.

How Ductless Heating and Cooling Works

Ductless systems deliver targeted heating and cooling through a small conduit that connects an outdoor compressor to indoor wall-mounted air handlers. Because conditioned air is delivered directly into the room, these systems eliminate the energy loss often associated with leaking ductwork.

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Key Benefits of Ductless Mini-Splits

Zoned Temperature Control

Independently adjust temperatures in specific rooms to keep everyone comfortable and avoid heating or cooling empty spaces.

High Energy Efficiency

Without ductwork to leak conditioned air, mini-splits deliver higher efficiency that often translates directly to lower utility bills.

Enhanced Indoor Air Quality

Built-in multi-stage filtration and active dehumidification remove dust, allergens, and excess moisture from your air.

Quiet & Sleek Operation
Enjoy quiet comfort with sleek, discrete indoor units designed to provide efficient heating and cooling.

Why Homeowners Hand It Off to Althoff

Since 1961, Althoff Home Services has set the standard for residential cooling across the Northwest and Western Suburbs. Homeowners in Crystal Lake, Hillside, and nearby communities trust our team for professional expertise, reliable service, and lasting comfort.

Ready for Customized, Zoned Comfort in Every Room?

What We Offer

A Legacy of Excellence

For over 60 years, we’ve built relationships that last generations by putting our customers first. As a family-owned and operated company, we focus on solutions that are truly in your best interest – not quick fixes. Transparency is at the heart of our service, with clear communication, upfront pricing, and honest recommendations with no hidden fees. Our team treats your home with care, maintains a clean workspace, and delivers service you can feel confident in.

White Glove Club

Protect your new system and enjoy worry-free comfort with our White Glove Club membership. Members enjoy valuable benefits, including:

  1. Scheduled maintenance to support system performance
  2. Priority service when you need it most
  3. $250 Equipment purchase credit
  4. Rewards program – earn 1 point for every $1 spent
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Other Althoff Home Services

When your home’s critical systems fail, you need more than a quick fix. You need a partner who understands the complex engineering of your home. At Althoff Home Services, we provide expert heating, cooling, plumbing, and electrical solutions tailored specifically for homeowners in Crystal Lake, Hillside, and the surrounding areas.

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Let’s get your project
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We offer whole-home solutions, not just quick fixes.